A warning though, water won't 100% wash away any scum. I recall reading an article somewhere saying that dentists still recommends conventional floss once in a

A warning though, water won't 100% wash away any scum. I recall reading an article somewhere saying that dentists still recommends conventional floss once in a while to remove any stubborn scum if you're using Waterpik. (That dentist doesn't say you should stop using Waterpik, though.)